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Lady_Fox [76]
3 years ago
10

What is probability of randomly selecting a marble and getting black or red? a bag contains 5 black marbles, 10 red marbles, and

20 blue marbles?
Mathematics
1 answer:
seropon [69]3 years ago
7 0
This is a mutually exclusive event because you can't choose both at the same turn you can only pick one or the other. so we add the event chances together,
5/35 + 10/35 = 15/35 or reduced 3/7
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An electronics store makes a profit of $72.00 for every television sold and $90.00 for every computer sold. The manager’s target
viktelen [127]

Answer:

<h2>Option A, C and D is the three possible solution.</h2>

Step-by-step explanation:

Each Television earns $72 and each Computer earns $90.

The manager’s target is to make at least $360.00 a day.

It is <u>not clarified the exact number of Televisions and Computers</u>.

Hence, as per the given condition, 72x + 90y \geq  360\\8x + 10y \geq  40\\4x + 5y \geq  20.

Now we just need to check the given options, whether they satisfy the above equation, or not.

Except the option B, each inequality indicates a value greater than 360.

Hence, option B can not be the possible solution.

4 0
3 years ago
Find the answer for x​
Ber [7]

Answer:

I think the answer is 75.

Step-by-step explanation:

because 35 + 70 is equal to 105. So now we will just subtract 105 by 180. which will give us 75.

5 0
3 years ago
74. A portion of a board has length x feet. The other part has
Novay_Z [31]

Step-by-step explanation:

Given that,

  • Length of the one portion of the board = x feet
  • Length of the another portion = (7x – 9) feet

According to the question,

\longrightarrow Total length = Sum of the length of the two pieces

\longrightarrow Total length = {x + (7x – 9)} feet

\longrightarrow Total length = {x + 7x – 9} feet

\longrightarrow <u>Total length = (8x – 9) feet</u>

Therefore, the total length of the board as a simplified expression in x is (8x – 9) feet.

4 0
3 years ago
What is the value of x in the triangle? A. 21 B. 10 C. 7 D. 7√3
enyata [817]
A

Working:
Tan(angle)=opposite/adjacent
Tan60 = x/7root3
x=7root3 x Tan60
Enter in calculator
x=21
4 0
3 years ago
Find the scale factor of the dilation. Then tell whether it is enlargement or reduction.​
mariarad [96]

Answer:

  a) 1/2; reduction

  b) 5/4; enlargement

Step-by-step explanation:

In each case, the scale factor is CP'/CP. When it is more than 1, the dilation is an enlargement.

Even before you run the numbers, you can tell if it is an enlargement or not. If the dilated figure is larger, P is closer to C than is P'. If P' is closer to C, then it is a reduction.

a) CP'/CP = (4-2)/4 = 2/4 = 1/2 . . . . a reduction

__

b) CP'/CP = 25/20 = 5/4 . . . . an enlargement

4 0
3 years ago
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